Hamworthy FLEET Series Installation, Commissioning And Operating Instructions page 77

Option 2 - for use with the QAA73 programmable room unit
To enable an additional mixing circuit with use of AGU 2.500, change the setting by using the + or – key and set
value to 50.
Press mode button to store change and return to home screen
Figure. F3
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HAMWORTHY HEATING LTD FLEET W series 500001211/F